I. adjectiveEtymology: Latin quadruplicatus, past participle of quadruplicare to quadruple, from quadruplic-, quadruplex fourfold, from quadri- + -plic-, -plex fold — more at -foldDate: 16561. consisting of or existing in four corresponding or identical parts or examples <

quadruplicate invoices

>2. being the fourth of four things exactly alike
II. transitive verb(-cated; -cating)Date: circa 16611. to make quadruple or fourfold
2. to prepare in quadruplicate
• quadruplicationnounIII. nounDate: 17901. four copies all alike — used with in<

typed in quadruplicate

>2. one of four things exactly alike; specifically one of four identical copies

quadruplicate — /kwɒ dru:plɪkət/ noun ♦ in quadruplicate with the original and three copies ● The invoices are printed in quadruplicate. ● The application form should be completed in quadruplicate … Dictionary of banking and finance